Biology

The correct answer is: D.Archaea.

Here’s why:

1.Unicellular: Archaea are unicellular organisms, just like bacteria.

2.Prokaryotic: Archaea are prokaryotes, meaning they lack a nucleus and other membrane-bound organelles, just like bacteria.

3.Found in extreme ecosystems: Archaea are well-known for thriving in extreme environments such as hot springs, deep-sea vents, and acidic or saline environments, conditions where most other life forms cannot survive. This is one of their most distinctive features.

Let’s look at why the other options are incorrect:

A.Eubacteria: While eubacteria are also unicellular and prokaryotic, they are typically found in ...